#!/bin/sh
a=10
b=20
c=30
value1=`expr $a + $b + $c`
echo "The value of  a + b + c equals $value1"
value2=`expr $c / $b`
echo "The value of  c/b equals $value1"
value3=`expr $c \* $b`
echo "The value of  c*b  equals $value1"
value4=`expr $a + $c / $b`
echo "The value of  a + c/b  equals $value1"
